Code_Aster
Code_Aster: A free, open-source solver with broad multiphysics and structural analysis depth. Ranked #8 of 11 in CAE Software by our editors (7.8/10); pricing: Free plan; best for structural teams wanting free, deep analysis.
At a glance
- Editor score7.8 / 10
- PricingFree plan
- Best forStructural teams wanting free, deep analysis
- Free planYes
- Paid fromFree
- HPC supportYes
- Facts checked24 Sep 2026
Where it wins
- Broad structural, thermal, geomechanical, seismic, fatigue, and fracture analysis
- HPC, sensitivity calculations, optimization, and Python-based study automation
- Integrates with MUMPS, PETSc, MFront, and Salome-Meca
Where it doesn't
- Meshing is provided through the separate Salome-Meca environment
- Support is centered on documentation and community channels
- No built-in AI features are provided
Our verdict on Code_Aster
Code_Aster is EDF R&D’s open-source finite element solver for numerical simulation of structures and materials. It is aimed at researchers and engineers working across energy, nuclear, civil engineering, transport, and aerospace, with company-size fit spanning small teams through enterprise. The software supports desktop and self-hosted deployment on Linux and Windows, and is distributed under the GNU GPL at no cost.
Its main strength is analytical breadth. Code_Aster covers linear and nonlinear static mechanics, dynamic and vibration analysis, thermal and thermo-mechanical calculations, geomechanics, soil-structure interaction, acoustics, seismic assessment, fatigue, fracture, fluid-structure interaction, and limit-state work. Adaptive mesh and mesh-refinement workflows support demanding studies, while sensitivity calculations, parameter fitting, optimization, and Python-based automation extend it beyond one-off solves. HPC support and integrations with MUMPS, PETSc, and MFront add options for computational and material-model workflows.
The product is a solver rather than a complete geometry-to-results application. Built-in meshing is not part of Code_Aster; Salome-Meca supplies an integrated environment for geometry, meshing, calculation, and post-processing, while command-based workflows remain available. Support is provided through documentation and community channels, so teams should be comfortable managing a technical, self-hosted workflow. Code_Aster fits structural groups that value broad analysis capabilities, open-source access, and automation. Teams seeking built-in meshing inside the solver, AI features, or a more packaged onboarding experience should consider another CAE platform.
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Code_Aster pricing
Code_Aster fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Analysis types | Structural mechanics; thermomechanics; thermal; geomechanics; modal, spectral and dynamic; acoustics; fluid-structure and soil-structure interaction; fatigue; fracture; seismic; sensitivity and optimization |
| Deployment | Both |
| Built-in meshing | No |
| HPC support | Yes |
| Design optimization | Yes |
| CAD import | Not verified |
| Deployment | Desktop, Self-hosted |
| Platforms | Linux, Windows |
| Support | Docs, Community |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: MUMPS, PETSc, MFront, Salome-Meca |
| Pricing | Free plan |
| Website | code-aster.org |
| Facts checked | 24 Sep 2026 |
Code_Aster integrations
Code_Aster lists 4 integrations on its own site.
- MUMPS
- PETSc
- MFront
- Salome-Meca
Alternatives to Code_Aster
- COMSOL MultiphysicsA broad desktop CAE environment for single-physics and coupled multiphysics modeling.9.4
- SimScaleA cloud CAE workspace spanning CFD, FEA, thermal, and electromagnetics.9.1
- OpenFOAMA free, extensible CFD toolbox for users comfortable configuring simulations through text files.8.8
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Code_Aster vs the competition
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Also Ranked In
Code_Aster is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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